Long-Wavelength Measurements of the Cosmic Microwave BackgroundRadiation Spectrum

Journal Article · Sun Feb 01 00:00:00 EST 1987 · Astrophysical Journal Letters

DOI:https://doi.org/10.1086/184910· OSTI ID:893043

Smoot, G F; Bensadoun, M; Bersanelli, M; pDe Amici, G; Kogut, A; Levine, S; Witebsky, C

We have measured the temperature of the cosmic microwave background radiation at wavelengths of 0.33, 3.0, 8.2 and 21.3 cm. These measurements represent a continuation of the work reported by Smoot et al. (1985). The new results have a weighted average of 2.70 {+-} 0.05 K and are consistent with past measurements. They limit the possible distortion of the cosmic microwave background radiation spectrum to less than 6%. The results of all measurements to date are consistent with a Planckian spectrum with temperature 2.74 {+-} 0.02 K spanning a wavelength range of 0.1 to 21 cm.

• Research Organization: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Director, Office of Science
• DOE Contract Number: DE-AC02-05CH11231
• OSTI ID: 893043
• Report Number(s): LBL-23014; TRN: US200625%%73
• Journal Information: Astrophysical Journal Letters, Vol. 317; Related Information: Journal Publication Date: 1987
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
RADIATIONS
RELICT RADIATION
WAVELENGTHS